Svbony SV193 2-Inch 0.8x Focal Reducer / Flattener for 80 ED Refractor.

Svbony SV193 2-Inch 0.8x Focal Reducer / Flattener for 80 ED Refractor.Designed for fixed field astrophotography with the SV503 refractor. While the SV193 will also thread into many other f 6f 7 refractors using 2" focusers, performance cannot be guaranteed on all optical systems. The 0. 8 reducer provides a wider field, finer star points and an improved signal to noise ratio under the same exposure time. In addition to reducing the focal length for faster imaging, the integrated field flattener corrects the natural

Call service is more convenient

Surface Quality: 60/40

ASI585MC Pro or ASI678MC may be a better fit depending on how you image

--Multi-layers anti-reflection coating can reduce the reflection and enhance the transmission of lights

eliminating the need for additional UV/IR blocking filters

the standard CLS filter may be a more economical alternative

It can reach 500 meters in an open area

Brass Compression Ring

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For maximum contrast the SII filter is carefully designed to block all light coming from H-alpha and NII (nitrogen)

revealing unexpected details in gas and planetary nebulae

Fits any 2" format telescope like an eyepiece with its standard 2" OD barrel